Dealing with weeds that thrive in Roundup Ready crops

Using a soil-applied herbicide to control most of the annual weeds and then following with glyphosate as late as possible is one strategy that can help control weeds like perennial sow thistle in Roundup Ready corn and soys

by PAT LYNCH

Some perennial weeds are becoming more prevalent because of Roundup Ready crops. This is because of less tillage and time of glyphosate spraying. The worst of these weeds is perennial sow thistle. A few annual weeds also thrive if you do not use a soil residual herbicide.

Better Farming - March 2011